Excerpt: Sunfire is no stranger to the small-box, high-output subwoofer concept, dating all the way back to 1996 with company founder Bob Carver’s original True Subwoofer—an 11.5-inch cube with one active driver and one passive radiator powered by a (claimed) 2,700-watt internal amplifier. A couple of years ago, the company rejiggered the configuration, moved the amp to a separate chassis, and put two 10-inch woofers in a 4-inch-deep box that would fit in a standard wall.
Excerpt: How do you fit a great big sub into your front room without causing upheaval? Buy one that sounds bigger than it looks, obviously – and that's where Sunfire's HRS-8 comes in. Despite featuring a 20cm driver and a claimed 1000 Watts of amplification, the Sunfire is the smallest sub here – just 25cm cubed, and all of that smoothly finished. It punches well above its size, bringing scale and authority quite at odds with its physical appearance.
Excerpt: This 25cm cube produces seemingly miraculous levels of bass energy from one of the smallest subs we’ve ever seen. What the…? Sunfire is noted for producing power. Lots of power, thanks to the clever ‘Tracking Downconverter Amplifier’ (TDA) developed by Sunfire founder Bob Carver. This controls the power supply voltage to an amplifier so that only a little more voltage than is required at any one moment is delivered to it.